GB1529517A - Process for the production of microcapsules - Google Patents

Process for the production of microcapsules

Info

Publication number
GB1529517A
GB1529517A GB18134/76A GB1813476A GB1529517A GB 1529517 A GB1529517 A GB 1529517A GB 18134/76 A GB18134/76 A GB 18134/76A GB 1813476 A GB1813476 A GB 1813476A GB 1529517 A GB1529517 A GB 1529517A
Authority
GB
United Kingdom
Prior art keywords
polycarbodiimide
solvent
dissolving
dispersing
microcapsules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB18134/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19752523586 external-priority patent/DE2523586C3/en
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB1529517A publication Critical patent/GB1529517A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/14—Polymerisation; cross-linking
    • B01J13/16—Interfacial polymerisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/08—Simple coacervation, i.e. addition of highly hydrophilic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/12—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution
    • B01J13/125—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution by evaporation of the solvent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

1529517 Microcapsules BAYER AG 4 May 1976 [10 May 1975 28 May 1975] 18134/76 Heading B8C A microcapsule comprises a central core and a shell comprising a film-forming polycarbodiimide. The microcapsule may be prepared (a) by dissolving the polycarbodiimide in an inert solvent, dispersing a core material in the resulting solution and introducing this dispersion in a shear gradient into an immiscible liquid phase in which an isocyanate reactive polyamine is present or which is added thereto, (b) by dissolving the polycarbodiimide in a solvent having a boiling point below 100‹ C. or which forms an azeotrope boiling below this temperature, dispersing or dissolving a core material in the resultant mixture which is then dispersed into a liquid immiscible with the solvent and heating the solvent to evaporate the solvent, or (c) by dissolving the polycarbodiimide in a solvent, dispersing the core material in the resulting solution and adding a precipitant for the polycarbodiimide. A carboxylic acid or copolymer thereof or an amine may be added to the dispersion of the microcapsules to modify the polycarbodiimide shell.
GB18134/76A 1975-05-10 1976-05-04 Process for the production of microcapsules Expired GB1529517A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2520892 1975-05-10
DE19752523586 DE2523586C3 (en) 1975-05-28 1975-05-28 Use of polycarbodiimides in the manufacture of microcapsules

Publications (1)

Publication Number Publication Date
GB1529517A true GB1529517A (en) 1978-10-25

Family

ID=25768878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18134/76A Expired GB1529517A (en) 1975-05-10 1976-05-04 Process for the production of microcapsules

Country Status (12)

Country Link
JP (1) JPS51137676A (en)
BR (1) BR7602885A (en)
CA (1) CA1079585A (en)
CH (1) CH603235A5 (en)
DD (1) DD125473A5 (en)
DK (1) DK147697B (en)
FR (1) FR2310801A1 (en)
GB (1) GB1529517A (en)
IL (1) IL49539A (en)
IT (1) IT1061255B (en)
MX (1) MX146606A (en)
NL (1) NL7604927A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009112467A1 (en) * 2008-03-11 2009-09-17 Basf Se Microcapsules with acylurea walls
US7833578B2 (en) 2003-07-07 2010-11-16 Taiwan Textile Research Institute Composition and method for fabricating microcapsules encapsulating phase-change material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2617747C2 (en) * 1976-04-23 1982-07-01 Bayer Ag, 5090 Leverkusen Reaction carbonless papers
DE2619524A1 (en) * 1976-05-03 1977-11-24 Bayer Ag METHOD OF MANUFACTURING MICROCAPSULES
JP7080772B2 (en) * 2018-08-29 2022-06-06 トッパン・フォームズ株式会社 Manufacturing method of microcapsules

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2311712B2 (en) * 1973-03-09 1978-08-10 Bayer Ag, 5090 Leverkusen Process for the production of microcapsules

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7833578B2 (en) 2003-07-07 2010-11-16 Taiwan Textile Research Institute Composition and method for fabricating microcapsules encapsulating phase-change material
WO2009112467A1 (en) * 2008-03-11 2009-09-17 Basf Se Microcapsules with acylurea walls
CN101970097A (en) * 2008-03-11 2011-02-09 巴斯夫欧洲公司 Microcapsules with acylurea walls
CN101970097B (en) * 2008-03-11 2013-07-17 巴斯夫欧洲公司 Microcapsules with acylurea walls
EP2628530A1 (en) * 2008-03-11 2013-08-21 Basf Se Microcapsules with walls formed of acylurea

Also Published As

Publication number Publication date
NL7604927A (en) 1976-11-12
JPS51137676A (en) 1976-11-27
JPS6151941B2 (en) 1986-11-11
DK204576A (en) 1976-11-11
IL49539A (en) 1979-11-30
IT1061255B (en) 1983-02-28
DD125473A5 (en) 1977-04-20
DK147697B (en) 1984-11-19
IL49539A0 (en) 1976-07-30
FR2310801B1 (en) 1982-05-07
FR2310801A1 (en) 1976-12-10
BR7602885A (en) 1976-11-23
MX146606A (en) 1982-07-15
CA1079585A (en) 1980-06-17
CH603235A5 (en) 1978-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950504